Automatic fire-resisting shutter.



E H MUCLOUD AUTMATIG HRB RESISTING SEUTTBR.

' APPLICATION FILED DBO. 23,1907. 987,154, vlantented 11131221, 1911.

2 SHEETS-SHEBT 1.

, nventoz WMM/uma@ @VVM @1% E. H. MOGLOUD. AUTOMATIC FIRE RESISTING SHUTTER.

lAPPLIATIOH FILED DEU. 23, 1907.

Patented 11131121, 1911.

2 SHEETS-SHEET 2.

lTED .STATES vPATENT OFFICE.

EDWARD H. MCCLOUD, 0F COLUMBUS, OHIO.

AUTOMATIC FIRE-RESISTING SHUTTER.

To all whom it may concern:

Bc it known that I, EDWARD H. McCLoUD, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Automatic Fire- Resisting Shutters, of which the following is a specification.

The Ichief object of the invention is to combine with a so-called counterbalanced lire-resisting rolling shutter or curtaln, 11nproved means adaptedto be rendered automatically operative in case of near-by lire, to impel the shutter or curtain to closed position.

The invention consists in the construction and combination ofparts hereinafter described and claimed, the invention not being confined in its practical embodiment to forms of the parts shown.

ln the accompanying drawings-Figure 1 is a vertical section on'the line Fig. 2, showing the shutter-closing devices. Fig. 2 is an elevation and section with parts broken out, looking toward that kend .of the shutter containing the shutter-closing devices; Fig. 3 is a sectional detail of the kind shown in Fig. 1 but illustrating a modification; Fig. 4 is a fragmentary ele- .vation and section looking from the exterior of a building and illustrating a shutter containing the invention; Figs. 5 and 6 are front and side views, respectively, illustrating a modification of the device for releasing the spring of the curtain-.closing devices. l

rlhe curtain roller 7 shownV is of the now well-known counterbalancing kind, that is to s ay, itv contains properly secured to it a" spring or springs, as at 8 and 9, that are wound up or put under increasing tension as the curtain is unrolled, so thatthe shut-` ter can be raised or lowered with little effort and shall remain at the point to whichit is adjusted without the aid of securing devices. Such roller has at oneV end a stationary shaft 10 about which the drum of the roller turns, and at the other end a rotary shaft 11 secured to turn with the drum. These shafts are supported in suitable end brackets 12 and.13,.respectively, as usual with such rollers. The rotary shaft 11 eX- tends somewhat beyond the outer face proper of the end bracket in which it turns, and, as shown more particularly in Figs. 1 and 2, is furnished with a barrel 14: and a Specicaton of Letters Patent.

Application led December 23, 1907. Serial No. 407,743

the

REISSUE Patented Mar. 21, 1911( collar 15 between which, within the barra? is secured, as seen at 14a and 15, avolute spring 16. The spring 16 is to be kept normally wound up. The rotary shaft 11 is normally loose to turn within the hub of the barrel, and the rim of the latter is furnished with a number of lugs 14", one of which at the proper moment is engaged by a lug 17 a on a lever 17, as hereinafter described. The collar 15 is held from turning by means of a dog lever 18 fulcrumed at one end at 18". said lever being held in collar-engaging pol sition by means of a rod 19 attached Vto the othervend of said dog lever and releasably secured in the channel bar of the shutter as hereinafter described. The rotary shaft 11 has pinned to it, beyond the aforesaid barrel, a ratchet wheel 20, and the barrel has pivoted to its outer face, in the plane of the toothed rim of the ratchet, a pawl or dog 21 that, is normally pressed by a spring 22 also on the outer vface of the barrel. The

spring 22 tends to press the pawl 21 into j pawl 21 with the ratchet-wheel 20 before the release of the barrel 14E from the lever 17. When, therefore, the lever 17 is `released, the' spring v16 exerts its power through the barrel, the pawl, the ratchet on the rotary shaft, and shutter roller, and in a direction to cause the shutter to run down and close the opening for-'which it is installed. `When the shutter is thus closed, it may be important, in order to permit the escape of persons in the building, that the shutter be easily raised, hence I provide means whereby the pressure of the spring 16 may be released and rendered inert and the ordinary balancel between the curtain and the springs within the roller restored. In Figs. 1 and 4 the said means consists of the wire rod 19 bent to forma loop 19a constituting a finger piece, and-a hooking ex lever'. 18 can be released either` from the interior or the exterior of the bu1lding after the shutter. has closed. Another form of dog-lever releasing device vis shown in Figs. 5 and 6. 'In this instance the rod 19 has a bent lower end19c that is caught under the upper end ofv alatch 19" pivotally mounted on the shutter channel and said latch 19d being engaged byon'e -arm of a horizontallypivoted latch lever 19". One arm ofthe latch lever 19e-is accessible from vthe `interior of the building, while the other is accessible from the exterior, said arm passing i 'through a suitable hole in the shutter` chanv nel.

The lever 17- is normally held up in posi- -tion to latch thepawl 21 and the spring barrel 14 means-of a pendent lever 23 hung on the inclosing hood 24,said lever having a shoulder 23a (see Fig. 4) on which the this modification is -employed the inner end` of. the volute spring 16 is 'made fast to a fixed boss 13a`on the end bracket 13, and the spring should be wound to such a state of tensiony that it will just about or quite extime the shutter reaches its completely-closing position, so that little effort will be requiredto raise the shutter a foot or two to permit the escapeof persons from or access of persons to theA interior of the buildin For winding up or placing the vo nte spring 16 under 'proper tension, the barrel 14 can be made with a number of holes 14 into which a tool can be Ainserted for turning the barrel.

What I claim and desir'e to secure by Letters Patent is:

- 1. In combination with a counterbalanced shutter or curtain that is normally operative for .raising and lowering, meansfor impelling the shutter or curtain to opening- ,closing'position consisting of a spring actuated barrel with a d og thereon, means for lnormallyfretaining said dog inoperative to impel vthe shutter` or curtain to openingclosing position and means operative by a dangerous rise of temperature for automatically releasingthe dog to impel the shutter or curtain to opening-closing position.

2. In combination with a counterbalanced shutter or curtain that is normally operal tive for raising and lowering, means Sin connection'therewith adapted to receive a dog or pawl, means. for impelling the shutter or curtain to opening-closing position consist- .mg position, means for normally retainin sa1d last-named means ininoperative cond1- tion adapted to be released.'for operation by a dangerousrise of temperature, and means for rendering said impelling means' inert and restoring the counterbalanced condition after the shutter has reached closing position. s f s' 4. In combination with the rotar shaft of a shutter Vor curtain lcounterba ancin spring roller, a ratchet Wheel fixed on `sai shaft, a barrel' loose with reference'` to said shaft, a `collar inwhich said shaft normally'- turns, a spring attached to said barrel and collar, a pawl von'said barrel to engage said I ratchet, wheel, means to detain said barrel from rotation, means to detain saidl pawl disengaged from said vrat :het wheel, means for releasin said pawl to en age'the barrel and means for releasing said arrel adapted to be' operated by a dangerous lrise of tems .,perature. haust its power shortly before or. vby the 5. In combination with the rotary shaft of a shutter or curtain counterbalancing spring l roller, a ratchet wheel xed en saidshaft, a

barrel loose with reference to said shaft, a collar with reference towhich said shaft normally turns, a sprin .attached to said barrel and collar, a paw on said barrel'to enga e vsaid ratchetwheel, means to detain arre'l from rotation, means to detain said pawl disengaged from said ratchet wheel and means for releasing said pawl to enga e the ratchet, and means for releasing said arrel adapted to be operated by a dangerous rise of temperature, said releasing means adapted to release the pawl prior to the release of the barrel.

6. In combina-tion with the rotar shaft of a shutter or curtain counterba ancin spring roller, a ratchet wheell fixed on sai `shaft, a barrel loose with reference to said said pawl to en age the ratchetV and means for releasing sai barrel adapted to be operated by a dangerous rise of temperature.

I"2'. In combination with the rotary shaft of a shutter or curtain counterbalancing which said shaft normally turns, means for holdingsaid collar from turning, a spring attached to said barrel and collar, a pawl on said barrel to engage said ratchet Wheel, means to detain said barrel from rotation, means to detain ,said pawl disengaged from said ratchet wheel and means for releasing said pawl to engage the ratchet Wheel, and

means for releasing said barrel adapted to be'aoperated by a dangerous rise of temperature.

8. In combination with the rotary shaft of a shutter or curtain counterbalancing spring roller, a ratchet Wheel fixed on said shaft, a barrel loose with reference to said shaft, a movable collar With reference to which said shaft normally turns, means for releasably holding said collar from turning, said means being accessible for operation at the lower portion of the openin lin which the shutter or curtain is installe a spring attached to said barrel and collar, a pawl on said barrel to engage said ratchet Wheel, means to detain said barrel from rotation, means to detain said pawl disengaged from said ratchet Wheel, and means for releasin said pawl to engage the ratchet Wheel, and

-means for releasing said barrel adapted to be operated by a dangerous rise of temperalture.

9. In combination with the rotary shaft of a shutter or curtain counterbalancing spring roller, a ratchet Wheel fixed on said shaft, a barrel loose with reference to said shaft, a movable collar with reference to which said shaft normally'turns, means for' releasably holding said collar from turning, said means being accessible for operation from either the interior or exterior ofthe building after the shutter or curtain is closed, and at the lower portion of the opening in which the shutter or curtain is installed, a spring attached to said barrel and collar, a pawl on said barrel to engage said ratchet Wheel, means to detain said barrel from rotation, means to detain said paWl disengaged from said ratchet Wheel, and means for releasing said paWl to engage'the ratchet Wheel, and means for releasing said barrel ada ted to be operated by a dangerous rise oi) temperature.

10. In means of the character set forth, thecombination of a roller, a shutter connected therewith, a clutch-member connected with said roller, `a normally-tensioned spring, a clutch-member connected with said spring and normally out of operative enga ement with said first-named clutchmem er, and restraining means for said spring equipped with a fusible member.

EDWARD I-I. MCCLOUD. Witnesses:

ALBERT RUSH, BENJAMIN FINCKEL. 

